Accelerator attachment for internal-combustion engines



Jan. 13. 1925- 1,522,845

(3. e. TERRELL ACCELERATOR ATTACHMENT FOR INTERNAL COMBUSTION ENGiNEs Filed Jan. 18, 1923 2 Sheets-Sheet 1 jgl.

[1E Terrell Jan. 1925 1,522,845

c. e. TERRELL ACCELERATOR ATTACHMENT FOR INTERNAL COMBUSTION ENGINES Filed Jan, 18, 1923 2 Sheets-Sheet 2 any n P Patented Jan. 13, 1925.

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CARL G. TERRELL, OF CHARLESTON, SOUTH CAROLINA.

ACCELERATOR ATTACHMENT ESE INTERNAL-COMBUSTION ENGINES.

Application fi1ed January 18, 1928. Serial No. 613,466.

To all whom it may concern.

Be it known that I, CARL Gr. TERRELL, a citizen of the United States. residing at Charleston, in the county of Charleston and State of South Carolina, have invented certain new and useful Improvements in Accelerator Attachments for Internal-Combustion Engines, of which the following is a specification.

This invention relates to improvements in accelerator attachments for automotive vehicles.

The primary object of this invention is the provision of an accelerator attachment for the carburetors of automotive vehicles, whereby the engine to which the carburetor is attached may be selectively controlled by pedal or hand lever arrangements in facile manner.

A further object of this invention is the provision of an accelerator attachment which may be specifically used in connection with the carburetor and internal combustion engine of Ford automotive vehicles, and by means of which the speed of the engine may be effectively regulated by pedal or hand controlled devices.

Other objects and advantages of this invention will be apparent during the course of the following detailed description.

In the accompanying drawings, forming a part of this specification, and wherein simi lar reference characters designate corresponding parts throughout the several views.

Figure 1 is a side elevation of a Ford internal combustion engine, showing the carburetor attached thereto and the improved accelerator attachment as used there with.

Figure 2 is a fragmentary perspective view of a Ford internal combustion engine, and its carburetor, showing more particularly the accelerator attachment as used therewith.

Figure 3 is a fragmentary plan view of essential details of this invention, showing the manner in which they are associated with a carburetor.

Figure 4 is a perspective view of an auxiliary throttle lever or member which is used as an important part of the improved accelerator attachment.

In the drawings, wherein for the purpose of illustration is shown but the preferred embodiment of this invention, the letter A designates an internal combustion engine,

such as the Ford, upon which the conventional carburetor B is used, and adapted to be operated by the improved accelerator attachment C. The accelerator attachment C preferably includes the auxiliary throttle lever or member 10; hand controlled means 11; and pedal operating means 12.

The engine A may be of any approved type, and includes the casing 15, and intake manifold 16 to which the carburetor B is attached. The Ford engine also includes the transmission casing 17 having the cover 18 upwardly thereon to which a portion of the accelerator attachment is aflixed, as will be subsequently described.

The carburetor B is of well known construction, including the portion 19 providing the exit passageway for fuel, within which the ordinary valve member, not shown, is positioned for regulating flow of fuel into the intake manifold 16 of the engine A. This valve is carried by a shaft 20 extending exteriorly of the carburetor, and upon which shaft is mounted the ordinary throttle lever 21. The lever 21 preferably has an aperture 22 on the free end thereof. At the pivot end of the lever 21, an extension 23 is provided, as is well known, eX tending substantially outward at right angles to the run of the lever 21, and which receives a transverse adjusting screw 24:, substantially horizontally positioned, and adapted for contact with a post portion 25 on the carburetor casing. whereby the a1nplitude of oscillation of the lever 21 may be limited. The provision of the stop screw 24, and its purpose, is well known; it being provided to permit a small quantity of fuel to enter the internal combustion engine, for idling purposes, notwithstanding the closed positioning of the throttle lever 21.

Referring to the accelerator lever 10, the same is preferably bent of a piece of sheet metal, to provide arm portions 25 and 26 which extend substantially at right angles to each other. At the juncture of the arm portions 25 and 26, the auxiliary lever member 10 is disposed in abutting relation with the throttle lever 21 and the stop screw extension 23, so that the stop screw 24 may be disposed through an aperture 28 provided transversely through the arm portion 26, and the arm portions 25 extends along and beneath the throttle lever 21 and has the open ing 30 in the free end thereof in aligning relation with the opening 22 of the throttle Aspiral spring 36is preferably-provided,

having one end thereof attached to an opening 28 in the arm 26 of the auxiliary thrott le lever 10, and having the other end suitably attached in any preferred manner to the internal combustion engine casing or intake manifold, substantially as is illustrated in Figure 1 of the drawings; the function of this spring being to maintain the auxiliary lever 10 and the throttle lever 21 to which it is securely attached, in closed'po'sitions, so that the stop screw 24 contacts the post 25.

7 Referring to the pedal operating means 12, the same includes a rocker arm 40 providinga horizontal portion 41 disposed on substantially a horizontal axis, and carried for oscillation by the spaced individually separate brackets 42 and 43. The brackets 42 and 43 are preferably of like construction, including an attaching portion 44, which is suitably secured, as by a bolt 45, to the transmission cover 18, and providing an upturned flange portion 46 rolled at its upper end to oscillatively receive the por tion 41 of the rocker! arm 40. It is preferred that circumferential extensions or sleeves 47 be welded or otherwise provided upon the rocker arm portion 41, upon the opposite sides of the bracket 43, as to prevent longitudinal movement of the rocker arm horizontal portion 41 within its bearings 42 and 43, although permitting 0scillativc movement of the same. Intermediate the brackets 42 and 43 a radial. lever arm v 110111 of 50 is provided, rigid with the rocker arm 40, and having the pedal lever 51 pivotally connected, as at 52, on the free end thereof; said pedal 51 preferably extending upwardly through the floor 58 of the vehicle with which the internal combustion engine A is associated. The depending or vertical porthe rocker arm 40 has the connecting rod 56 pivotally conne'cted,'as at 57; at the free end thereof. The opposite endofthe connecting rod 56 is screw threaded for its" major length, and provided with the spa ced adjusting nuts 59 and60 thereon. intermediate which the connecting rod 56 is slidably disposed through the swivel bolt 35, substantially as'is illustrated'in the draw m'gs.

Referriiigto the hand controlled means 11, the rod 42,;as ab'ove mentioned, is pivotally connected to the free ends of the throttle l'e'v'er21 and the'auxiliary lever arm 25; The

opposite end of the'connecting arm 32 slidably extends through an eye of a swivel memher 65, which is oscillatively connected to the crank 66 of the ordinary) throttle rod 68. The extreme end of the connecting rod 32 is provided with a nut or head 69, which permits sliding of the rod 32 in the proper direction with respect to the crank 66.

In operation, the driver of a vehicle may control the carburetor through the pedal ar rangement 12 of the improved accelerator attachment. It is obvious that upon depressing the pedal 51, the rocker member 40 will be oscillated as to push the connecting rod the swivel member '65, the throittle redv 68' will not be rocked. Should it be desired to operate the carburetor by means of the throttle rod 68, it is obvious that upon -rocking of the same in proper direction, the crank 66 will be moved so that the swivel member 65-engages the head 69, to-move the connectingrod32 for operating the throttle lever 21 to open the valve of the carburetor D. Similarly, it is to be noted. that by this operation of the .carburetor through the hand means 11. the pedal opera-tingmeans 12 willnot be disturbed, as the swivel member 35 moves along the screw threaded portion of-the connecting rod 56.

From the foregoing description of this invention it is obvious that an improved accelerator attachment forinternal combustion engines, and their carburetors, has been provided, by means of which the fuelfrom the carburetor may be eifectively controlled in facile manner, according to the desires of the operator. As the improved device C is more particularly desired as an accessory, it is to be noted that the parts of the same do not necessitate any altering or the auto motive vehicle and the carburetor, as various attaching and connecting'parts are. already embodied as parts of the internal combustion engine and carburetor. 'This is particularly true of the Ford vehicle, and its conventional carburetor, as the improved accelerator attachment is adapted for accessory use with this type of internal combustion engine.

Various changes in the shape, size, and

arrangement of parts may be made to thej form of invention herein shown and described, withoutdeparting from the spirit of the invention or the scope of the claims.

I claim:

1. The combination with a carburetor including a throttle lever and stop screw for limiting the amplitude of movement of the throttle lever, of an auxiliary lever including a portion adapted to extend along the throttle lever, and a second portion extending substantially at right angles to the first portion for detachable connection to the lever by said stop screw, hand operating means for the carburetor including a member connecting the lever and first mentioned portion of the auxiliary lever at the free ends of said levers, and pedal operating means including a member slidably connected with the free end of the second portion of the auxiliary lever remote from the throttle lever and limited in its sliding movement.

2. In combination with a carburetor including a throttle lever, and a stop screw for limiting the amplitude of operation of the throttle, of an auxiliary lever including arm portions extending substantially at right angles to each other, said auxiliary lever adapted for connection to said throttle lever whereby one arm portion is connected thereto by said stop screw and the other arm portion extends along the throttle lever to the free end thereof, hand operating means connecting the free ends of said throttle lever and auxiliary lever, and pedal operating means including a bearing rotatably connected with the other free end of said auxiliary lever and a reciprocating rod slidable through said bearing and having abutment means at opposite sides of the bearing and adjustable longitudinally upon the rod.

3. In a device of the class described, the combination with a carburetor including a throttle lever provided with an opening in the free end thereof, and a lateral extension adjacent the pivot point of said throttle lever having an adjustable thumb screw therein for limiting the amplitude of operation of the throttle lever, of an auxiliary lever member of sheet material bent to provide a pair of arm portions extending substantially at right angles to each other, one of said arm portions having its inner end portion extending in a vertical plane and provided with an opening for attachment to the lateral extension of said throttle lever by said stop screw, and having its free end portion extending beyond the lateral extension and twisted to extend in a horizontal plane, the second of said arm portions of the auxiliary lever being twisted to extend in a horizontal plane beneath the control lever and having an opening in the free end thereof for registering with the opening in the free end of the throttle lever, hand operating means including a connecting rod pivotally engaging through the aligning openings of the throttle lever and its adjacent arm of the auxiliary lever, the first arm portion of said auxiliary lever extending along the lateral extension of said throttle lever having an opening in the free end thereof, and pedal operating means oscillatively connected in the last mentioned opening.

4. In a device of the class described, the combination with an internal combustion engine including a carburetor having a throttle operating lever thereon, of an auxiliary lever for detachable connection to the throttle lever of the carburetor, spring means connecting intermediate the internal combustion engine and said auxiliary lever for maintaining the throttle lever in a closed position, pedal operating means for said carburetor includin a rocker arm carried by the internal com ustion engine, and a connecting rod pivotally connected to said rocker arm at one end and slidably engaging the auxiliary lever for operation of said throttle lever when the rocker arm is moved in one direction.

5. In a device of the class described, the combination with an internal combustion engine, a carburetor including a throttle operating lever, and a throttle rod having a crank arm extending outwardly thereof. of a lever for auxiliary use with said throttle lever including a pair of arm portions extending substantially at right angles to each other, means detachably connecting said auxiliary lever to said throttle lever, a spring for maintaining said auxiliary lever and throttle lever to close said carburetor, a swivel member carried by the crank portion of said throttle rod, a connecting rod pivot ally connected to said throttle lever and auxiliary lever at one end and slidably connected to the swivel member of the throttle rod crank at its other end, said connecting rod having a headed portion thereon adapted to engage said swivel member of the throttle rod upon movement of the throttle rod in one direction so that said throttle lever of the carburetor may be operated, a rocker shaft oscillatively carried by the internal combustion engine, a pedal device carried by said rocker shaft for operation of the latter, a connecting rod pivotally connected at one end to said rocker shaft for reciprocatory movement of the same, the other end of said connecting rod having a pair of adjustable spaced nuts thereon, and a swivel member carried by said auxiliary lever adapted for slidable extension intermediate the nuts of said last mentioned connecting rod, whereby upon movement of said rocker shaft in one direction the throttle lever and auxiliary lever may be operated.

CARL G. TERRELL. 

